BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 599 56.7%
2 United States 185 17.5%
3 Netherlands 87 8.2%
4 Germany 59 5.6%
5 France 56 5.3%
6 Canada 21 2%
7 Korea, Republic of 18 1.7%
8 Russia 6 0.6%
9 Hong Kong 4 0.4%
10 Australia 4 0.4%
11 India 3 0.3%
12 Brazil 2 0.2%
13 Finland 2 0.2%
14 Serbia 2 0.2%
15 Singapore 2 0.2%
16 Tajikistan 2 0.2%
17 Ukraine 2 0.2%
18 United Kingdom 2 0.2%
19 Norway 1 0.1%